المتطفلات المرافقة لحشرة الحمضيات الشمعية Ceroplastes floridensis Comstock على أشجار الحمضيات في محافظة اللاذقية، سورية

الملخص EN

A study was carried out to identify the parasitoids associated with the citrus wax scale ceroplastes floridensis comstock (hemiptera: coccidae) and assess their activity during the growing season 2017/2018 in the following areas kamiliya, dibba, sitkheres, Ain al-Laban in four orchards of Lattakia governorate, Syria.

the plant samples (leaves) infested with the pest were collected from the orchards of the following varieties: washington navel, clemantine, java orange.

five species of parasitoids were recorded: two aphelinidae (coccophagus scutellaris, marietta picta), two encyrtidae (psyllaephagus sp., microterys nietneri), and one pteromalidae (scutellista caerulea).

the monthly activity of parasitic species isolated from citrus wax scale varied during the study months, with the highest number of parasitoid s.

caerulea was 24 in October, while in July and august the lowest number was 7 individuals each month, followed by the parasitoid c.

scutellaris with the highest number of 20 in October, and the lowest number of 3 in April, followed by the parasitoid m.

nietneri with the highest number of 13 in June, and the lowest number 4 in October.

the highest number of the parasitoid psyllaephagus sp.

reached 7 individuals in December, and the lowest number was in august and September, and all parasitoids disappeared in January and February.

the highest relative density of m.

nietneri in April was 37.93%, and the lowest relative density in October was 6.25%; the highest relative density of the parasitoid s.

caerulea in October (37.5%) and the lowest in june (22.22%); the highest relative density of the parasitoid c.

scutellaris was in august (36.36%), and the lowest in april (10.34%); and the highest relative density of the parasitoid psyllaephagus sp.

was in December (30.43%), and the lowest in September (4.44%); the highest relative density of the intruder m.

picta was in November (34%), and the lowest was in may (6.25%).

the highest rate of parasitism (27.74%) was recorded in October at Dibba, with the highest relative intensity (37.5%) for s.

caerulea.